sun
(n) : the star which the Earth revolves around and receives light and warmth from.The Illustrated Oxford Dictionary, Oxford University Press, 1998; a star, especially when seen as the centre of any single solar system
(v) : to expose to the warmth and radiation of the sun.; to warm or dry in the sunshine.
"beautiful bodies lying on the beach, sunning their bronzed limbs."
synonyms: rest day, light, visible light more», important person, personage, star